00671naa#a2200169#i#450# EN\\bibl\59228 20260311233332.3 2712-7761 20230420b2023####ek#y0engy0150####ca RU From Professor D. P. Grigoriev’s archive: E. V. Zinserling’s letters Journal article Syktyvkar FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences" 2023 5 с. Journal article local Описательная минералогия. Специальное минераловедение. 549 Voytehovskiy Yuri Leonidovich ras.editorum.ru